CN116427409A - Construction method of double-layer anchor ear concrete formwork support system - Google Patents
Construction method of double-layer anchor ear concrete formwork support system Download PDFInfo
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- CN116427409A CN116427409A CN202310311248.9A CN202310311248A CN116427409A CN 116427409 A CN116427409 A CN 116427409A CN 202310311248 A CN202310311248 A CN 202310311248A CN 116427409 A CN116427409 A CN 116427409A
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- 239000004567 concrete Substances 0.000 title claims abstract description 70
- 238000009415 formwork Methods 0.000 title claims abstract description 40
- 238000010276 construction Methods 0.000 title claims abstract description 29
- 239000011513 prestressed concrete Substances 0.000 claims abstract description 65
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims description 49
- 238000007906 compression Methods 0.000 claims description 49
- 229910000831 Steel Inorganic materials 0.000 claims description 37
- 239000010959 steel Substances 0.000 claims description 37
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 230000002285 radioactive effect Effects 0.000 claims description 2
- 239000011150 reinforced concrete Substances 0.000 abstract description 8
- 238000001125 extrusion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
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Abstract
The invention discloses a construction method of a double-layer anchor ear concrete formwork support system, which is characterized in that a lower support anchor ear device is arranged on the outer wall of a prestressed concrete pipe pile, an inner platform and an outer platform are arranged on the outer wall of the prestressed concrete pipe pile, and a lower anchor ear concrete formwork support system is established; an upper layer anchor ear concrete template supporting system is established by arranging an upper supporting anchor ear device on the outer wall of the prestressed concrete pipe pile above the inner platform and installing a concrete supporting template; and a support connecting rod is arranged between the concrete support template and the inner platform or the outer platform. The construction method of the double-layer anchor ear concrete formwork support system has the advantages of simple procedure, convenient and quick operation and high efficiency, can provide a stable support device for reinforced concrete required by pile extension of the prestressed concrete pipe piles, also provides a stable operation platform for pile extension operation, improves the stability of pile extension operation, has high stability and high support strength, and greatly improves the operation efficiency and convenience of post pile extension.
Description
Technical Field
The invention relates to the technical field of building tools, in particular to a construction method of a double-layer anchor ear concrete formwork support system.
Background
The prestressed concrete pipe pile is a hollow cylinder type concrete prefabricated part manufactured by adopting a pretensioning prestressing centrifugal forming process and performing high-pressure high-temperature steam curing, and the standard section length is 10m. The prestressed concrete pipe pile has the advantages of high single pile bearing capacity, good bending resistance and pulling resistance and low manufacturing cost, and is widely applied to the technical fields of industrial and civil high-rise buildings, railways, highways, bridges, ports, wharfs, water conservancy projects, municipal engineering and other engineering buildings.
At present, for pile splicing operation of prestressed concrete piles, pile splicing installation of two piles is generally realized through an independent pile splicer and bolts, and although pile splicing speed is high, the pile splicer and the bolts can corrode and rust in the process of immersing the prestressed concrete piles in wet sludge for a long time, so that stability of the upper layer prestressed concrete piles is affected, and great potential safety hazards are brought to buildings on the prestressed concrete piles. The joint of the two prestressed concrete pipe piles is reinforced by reinforced concrete, and the pile splicing speed is low, but the phenomenon of corrosion and rust can be effectively avoided, so that the stability of the building is improved. However, at present, a construction method of a double-layer anchor ear concrete formwork support system required for reinforced concrete reinforcement pile extension operation of a prestressed concrete pipe pile is not common. Therefore, it is necessary to develop a construction method of a double-layer anchor ear concrete formwork support system required for reinforced concrete pile reinforcement and pile extension operation of the prestressed concrete pipe pile.
Disclosure of Invention
The invention aims at: the construction method of the double-layer anchor ear concrete formwork support system is provided to solve the defects.
In order to achieve the above object, the present invention provides the following technical solutions:
a construction method of a double-layer anchor ear concrete formwork support system comprises the following steps:
s1, establishing a lower-layer hoop supporting system:
s11, according to the requirement, at a certain height position of the upper end of the prestressed concrete pipe pile, two arc stirrups in the lower support hoop device are transversely arranged relatively and clamped on the outer wall of the prestressed concrete pipe pile, and the two arc stirrups are tightly regulated and fixed through a fastening bolt;
s12, inserting and fixing the front ends of a plurality of overhanging supporting steel bars into a plurality of anchor ear embedded nuts arranged on the outer end face of the circular arc stirrup ring in the lower supporting anchor ear device one by one, and realizing the fixation of the overhanging supporting steel bars and the anchor ear embedded nuts by utilizing the matching of the external threads arranged at the front ends of the overhanging supporting steel bars and the internal threads of the anchor ear embedded nuts, thereby realizing the establishment of a lower anchor ear supporting system beside the prestressed concrete pipe pile;
s2, constructing a lower friction type inner and outer platform:
s21, sleeving a prefabricated platy inner platform with a pile hole in the center on the prestressed concrete pipe pile, and enabling the inner platform to be clung to a plurality of overhanging support steel bars arranged on the lower support hoop device;
s22, sleeving a prefabricated plate-shaped outer platform with an outer platform central hole in the center on the outer side of the inner platform, and enabling the hole wall of the outer platform central hole of the outer platform to be attached to the outer peripheral wall of the inner platform;
s23, sequentially screwing a plurality of compression screws into a plurality of compression nut holes preset on the end surfaces of the outer platform and the inner platform one by one in a threaded engagement mode;
s24, when the front ends of the compacting screws are exposed out of the pile holes, the prefabricated compacting ends are arranged at the front ends of the compacting screws one by one, and then the compacting screws are screwed in continuously, so that the compacting ends at the front ends of the compacting screws are extruded on the outer wall of the prestressed concrete pipe pile, and the friction type inner and outer platforms are constructed;
s3, constructing an upper hoop supporting system:
s31, on the outer wall of the prestressed concrete pipe pile with a certain height above the inner platform as required, two arc stirrups in the upper support hoop device are oppositely transversely arranged and clamped on the outer wall of the prestressed concrete pipe pile, and the two arc stirrups are tightly regulated and fixed through a fastening bolt;
s32, respectively inserting the front ends of a plurality of overhanging supporting steel bars into a plurality of anchor ear embedded nuts arranged on the outer end faces of two circular arc stirrups in an upper supporting anchor ear device one by one, and fixing the overhanging supporting steel bars and the anchor ear embedded nuts by using the fact that external threads arranged on the front ends of the overhanging supporting steel bars are matched with the internal threads of the anchor ear embedded nuts;
s33, sleeving a prefabricated platy concrete support template with a pile hole in the center on the prestressed concrete pipe pile, and enabling the concrete support template to be clung to a plurality of overhanging support steel bars arranged on the upper support hoop device;
s34, a plurality of connecting rod holes are correspondingly arranged on the concrete supporting template and the inner platform or the outer platform in advance, and finally, the upper ends and the lower ends of the plurality of supporting connecting rods are respectively arranged in the connecting rod holes of the concrete supporting template and the inner platform or the outer platform, and the two ends of the supporting connecting rods are respectively fixed by two nuts in a threaded engagement mode, so that the construction of an upper hoop supporting system beside the prestressed concrete pipe pile is realized; the whole construction process of the double-layer anchor ear concrete formwork support system is finished.
Preferably, the lower support hoop device and the upper support hoop device are composed of two circular arc stirrups, one ends of the two circular arc stirrups are fixed together through hinging, and the other ends of the two circular arc stirrups are fixed through fastening bolts; or two ends of the two circular arc stirrups are fixed through fastening bolts.
Preferably, the lower support hoop device and the upper support hoop device are arranged in a radial shape by taking the center of a central hole formed by two circular arc hoops as a central point, and the anchor hoop embedded nuts and the cantilever support steel bars are all arranged in the same horizontal plane.
Preferably, the lower support hoop device, the upper support hoop device and the inner platform are arranged on the outer wall of the prestressed concrete pipe pile, and the prestressed concrete pipe pile is positioned at the center of a pile hole in the center of the inner platform and a center hole formed by two circular arc stirrups of the lower support hoop device and the upper support hoop device.
Preferably, the inner platform and the outer platform are positioned on the same plane, and the plurality of compression nut holes and compression screws are arranged in a radial form by taking the center of the pile hole of the inner platform as a center point.
Preferably, in the step S2, the compression end is suspended in a pile hole in the center of the inner platform and fixed at the front end of the compression screw, the compression end is composed of a steel member positioned at the rear end and a rubber member positioned at the front end, and the rubber member is extruded on the outer wall of the prestressed concrete pipe pile.
Preferably, in the step S2, the inner platform and the outer platform are all integrally formed or formed by splicing and fixing a plurality of parts, and are integrally formed into a plate-type platform with a circular or square metal structure or a plastic structure; and the hole wall of the outer platform center hole of the outer platform is attached to the outer peripheral wall of the inner platform.
Preferably, in step S2, a compression internal thread is disposed in the compression nut hole, a compression external thread that is in fit with the compression internal thread is disposed on the compression screw, and the compression screw is installed in the compression nut hole in a threaded engagement manner.
Preferably, in step S3, the concrete support template is a plate-type platform with a metal structure or a plastic structure, which is integrally formed or is formed by splicing and fixing a plurality of parts, and the whole plate-type platform is circular or square.
The invention has the beneficial effects that:
the invention relates to a construction method of a double-layer anchor ear concrete formwork support system, which is characterized in that a lower support anchor ear device is arranged on the outer wall of a prestressed concrete pipe pile, an inner platform is arranged on the lower support anchor ear device, and an outer platform is fixed through a compacting device, so that the lower anchor ear concrete formwork support system is established, and a stable operation platform is provided for pile splicing operation of the prestressed concrete pipe pile; an upper layer anchor ear concrete template supporting system is established by arranging an upper support anchor ear device on the outer wall of the prestressed concrete pipe pile above the inner platform and installing a concrete support template, so that a stable support template is provided for reinforced concrete required by pile splicing of the prestressed concrete pipe pile; and through setting up a plurality of support connecting rod between concrete support template and interior platform or outer platform, can strengthen the connection between the interior platform or the outer platform of top concrete support template and below, improve the support stability of the interior platform or the outer platform of top concrete support template and below. The construction method of the double-layer anchor ear concrete formwork support system has the advantages of simple procedure, convenient and quick operation and high efficiency, can provide a stable support device for reinforced concrete required by pile extension of the prestressed concrete pipe piles, can also provide a stable operation platform for pile extension operation, and improves the stability of pile extension operation; the double-layer anchor ear concrete formwork support system constructed by the invention has the advantages of simple and compact structure, high stability and high support strength, and can also greatly improve the operation efficiency and the operation convenience of the post-stage pipe pile.
Drawings
Fig. 1: a flow diagram of the method of the invention;
fig. 2: the structure schematic diagram of the double-layer anchor ear concrete formwork support system is implemented;
fig. 3: the structure schematic diagram of the support hoop device of the double-layer hoop concrete formwork support system is implemented.
Detailed Description
The following description of embodiments of the present invention is provided with reference to fig. 1 to 3:
as shown in fig. 2-3, a double-layer anchor ear concrete formwork support system comprises a lower support anchor ear device 1 and an upper support anchor ear device 5 which are arranged on the outer wall of a prestressed concrete pipe pile 100, wherein an inner platform 2 and a concrete support formwork 6 are respectively sleeved on the lower support anchor ear device 1 and the upper support anchor ear device 5, and the prestressed concrete pipe pile 100 is arranged in pile holes 21 arranged in the centers of the inner platform 2 and the concrete support formwork 6.
The lower support hoop device 1 and the upper support hoop device 5 are formed by oppositely and transversely arranging two circular arc stirrups 11 and fixing the circular arc stirrups through fastening bolts 12. One end of each of the two circular arc stirrups 11 is hinged and fixed together, and the other end of each of the two circular arc stirrups is fixed through a fastening bolt 12; or both ends of the two circular arc stirrups 11 are fixed by fastening bolts 12. The prestressed concrete pipe pile 100 is arranged in a pile hole 21 in the center of the inner platform 2 and a center hole formed by two circular arc stirrups 11 of the lower support hoop device 1 and the upper support hoop device 5. Tightness adjustment of the outer walls of the lower support hoop device 1, the upper support hoop device 5 and the prestressed concrete pipe pile 100 can be achieved through tightness adjustment of the fastening bolts 12, so that the lower support hoop device 1 and the upper support hoop device 5 can be conveniently installed.
The lower support hoop device 1 and the upper support hoop device 5 are respectively provided with a plurality of hoop embedded nuts 12 on the annular outer end face of the circular arc stirrup 11, and cantilever support steel bars 14 are respectively arranged. The front ends of the overhanging supporting steel bars 14 are provided with external threads matched with the internal threads of the anchor ear embedded nuts 12, the overhanging supporting steel bars 14 and the anchor ear embedded nuts 12 are in one-to-one correspondence, and the front ends of the overhanging supporting steel bars 14 are inserted and screwed into the anchor ear embedded nuts 12. The plurality of overhanging supporting steel bars 14 are arranged in a radial shape by taking the center of a central hole formed by two circular arc stirrups 11 as a central point, and the plurality of anchor ear embedded nuts 12 and the overhanging supporting steel bars 14 are all arranged in the same horizontal plane. The inner platform 2 and the concrete supporting template 6 are respectively pressed on a plurality of overhanging supporting steel bars 14 in the lower supporting hoop device 1 and the upper supporting hoop device 5 by utilizing the self gravity of the inner platform and the concrete supporting template.
The outer side of the inner platform 2 is provided with an outer platform 3, and the inner platform 2 and the outer platform 3 are fixed on the outer wall of the prestressed concrete pipe pile 100 through extrusion of a compacting device 4. The inner platform 2 and the outer platform 3 are positioned on the same plane, a plurality of compression nut holes 22 penetrating through the end faces of the outer platform 3 and the inner platform 2 are formed in the end face of the outer platform 3, the compression device 4 comprises compression screws 41 and compression ends 42, compression internal threads are formed in the compression nut holes 22, compression external threads matched with the compression internal threads are formed in the compression screws 41, the compression screws 41 are sequentially screwed into the compression nut holes 22 of the outer platform 3 and the inner platform 2 in a threaded engagement mode, the compression ends 42 are finally suspended in a pile hole 21 in the center of the inner platform 2 and are fixed at the front ends of the compression screws 41, and the compression screws 41 are uniformly arranged in a radioactive mode by taking the center of the pile hole 21 as a center point. The compression end 42 is composed of a steel member at the rear end and a rubber member at the front end, which is pressed against the outer wall of the prestressed concrete pipe pile 100. By means of rotation adjustment of the compression screw 41, the rubber component of the compression end 42 at the front end of the compression screw 41 can be extruded on the outer wall of the prestressed concrete pipe pile 100, and the compression screw 41 can be continuously screwed in, so that the extrusion force between the compression device 4 and the outer wall of the prestressed concrete pipe pile 100 can be adjusted. The anchor ear device 1, the inner platform 2 and the compression device 4 arranged on the outer platform 3 are fixedly supported through anchor ear embedded nuts 12, and form pile-side extrusion with the prestressed concrete pipe pile 100, and the stability of auxiliary support of the platform is realized by utilizing friction force generated by extrusion.
The inner platform 2, the outer platform 3 and the concrete support template 6 are all integrally formed or formed by splicing and fixing a plurality of parts, and are plate-type platforms with round or square metal structures or plastic structures; an outer platform center hole is formed in the center of the outer platform 3, and the hole wall of the outer platform center hole of the outer platform 3 is attached to the outer peripheral wall of the inner platform 2.
A plurality of support connecting rods 7 are arranged between the concrete support templates 6 and the inner platform 2 or the outer platform 3. The connection between the upper concrete support template 6 and the lower inner platform 2 or the outer platform 3 can be enhanced through the support connecting rods 7, and the support stability of the upper concrete support template 6 and the lower inner platform 2 or the outer platform 3 is improved.
As shown in fig. 1, 2 and 3, the construction method based on the double-layer anchor ear concrete formwork support system specifically comprises the following steps:
s1, establishing a lower-layer hoop supporting system:
s11, according to the requirement, at a certain height position of the upper end of the prestressed concrete pipe pile 100, two arc stirrups 11 in the lower support hoop device 1 are transversely arranged relatively and clamped on the outer wall of the prestressed concrete pipe pile 100, and the two arc stirrups 11 are tightly regulated and fixed through a fastening bolt 12;
s12, the front ends of a plurality of cantilever support steel bars 14 are respectively inserted and fixed into a plurality of anchor ear embedded nuts 12 arranged on the annular outer end face of the circular arc stirrups 11 in the lower support anchor ear device 1 one by one, the front ends of the cantilever support steel bars 14 are provided with external threads which are matched with the internal threads of the anchor ear embedded nuts 12 to realize the fixation of the cantilever support steel bars 14 and the anchor ear embedded nuts 12, and then the establishment of a lower-layer anchor ear support system on the prestressed concrete pipe pile 100 is realized;
s2, constructing a lower friction type inner and outer platform:
s21, sleeving a prefabricated platy inner platform 2 with a pile hole 21 in the center on the prestressed concrete pipe pile 100, and enabling the inner platform 2 to be clung to a plurality of overhanging support steel bars 14 arranged on the lower support hoop device 1;
s22, sleeving a prefabricated plate-shaped outer platform 3 with an outer platform central hole in the center outside the inner platform 2, and attaching the hole wall of the outer platform central hole of the outer platform 3 to the outer peripheral wall of the inner platform 2;
s23, a plurality of compression screws 41 are screwed into a plurality of compression nut holes 22 preset on the end surfaces of the outer platform 3 and the inner platform 2 one by one in sequence in a threaded engagement mode;
s24, when the front ends of the compacting screws 41 are exposed to the pile holes 21, the prefabricated compacting ends 42 are arranged at the front ends of the compacting screws 41 one by one, and then the compacting screws 41 are screwed in continuously, so that the compacting ends 42 at the front ends of the compacting screws 41 are extruded on the outer wall of the prestressed concrete pipe pile 100, and the friction type inner platform and the friction type outer platform are constructed;
s3, constructing an upper hoop supporting system:
s31, on the outer wall of the prestressed concrete pipe pile 100 with a certain height above the inner platform 2 as required, two arc stirrups 11 in the upper support hoop device 5 are oppositely transversely arranged and clamped on the outer wall of the prestressed concrete pipe pile 100, and the two arc stirrups 11 are tightly regulated and fixed through fastening bolts 12;
s32, inserting the front ends of a plurality of overhanging supporting steel bars 14 into a plurality of anchor ear embedded nuts 12 arranged on the annular outer end surfaces of two circular arc stirrups 11 fixed in an upper supporting anchor ear device 5 one by one, and realizing the fixation of the overhanging supporting steel bars 14 and the anchor ear embedded nuts 12 by utilizing the matching of the external threads arranged at the front ends of the overhanging supporting steel bars 14 and the internal threads of the anchor ear embedded nuts 12;
s33, sleeving a prefabricated platy concrete support template 6 with a pile hole 21 in the center on the prestressed concrete pipe pile 100, and enabling the concrete support template 6 to be clung to a plurality of overhanging support steel bars 14 arranged on the upper support hoop device 5;
s34, a plurality of connecting rod holes are correspondingly formed in the concrete supporting template 6 and the inner platform 2 or the outer platform 3 in advance, and finally, the upper ends and the lower ends of the plurality of supporting connecting rods 7 are respectively arranged in the connecting rod holes of the concrete supporting template 6 and the inner platform 2 or the outer platform 3, and the two ends of the supporting connecting rods 7 are respectively fixed by two nuts in a threaded engagement mode, so that the construction of an upper hoop supporting system beside the prestressed concrete pipe pile 100 is realized; the whole construction process of the double-layer anchor ear concrete formwork support system is finished.
According to the construction method of the double-layer anchor ear concrete formwork support system, the lower anchor ear device 1 is arranged on the upper side of the outer wall of the prestressed concrete pipe pile 100, the inner platform 2 is installed, and the outer platform 3 is fixed through the compression device 4, so that the lower-layer anchor ear concrete formwork support system is established, and a stable operation platform is provided for pile splicing operation at the upper end of the prestressed concrete pipe pile 100; an upper layer anchor ear concrete formwork support system is established by arranging an upper support anchor ear device 5 and installing a concrete support formwork 6 on the outer wall of the prestressed concrete pipe pile 100 above the inner platform 2, so that a stable support formwork is provided for reinforced concrete required by the pile extension 100 of the prestressed concrete pipe pile; and through setting up a plurality of support connecting rod 7 between concrete support template 6 and interior platform 2 or outer platform 3, can strengthen the connection between the interior platform 2 or the outer platform 3 of top concrete support template 6 and below, improve the supporting stability of the interior platform 2 or the outer platform 3 of top concrete support template 6 and below.
The construction method of the double-layer anchor ear concrete formwork support system has the advantages of simple procedure, convenient and quick operation and high efficiency, can provide a stable support device for reinforced concrete required by pile extension of the prestressed concrete pipe piles, can also provide a stable operation platform for pile extension operation, and improves the stability of pile extension operation; the double-layer anchor ear concrete formwork support system constructed by the construction of the invention has the advantages of simple and compact structure, high stability and high support strength, and can also greatly improve the operation efficiency and the operation convenience of the post-stage pipe pile.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is also within the scope of the invention if the inventive concept and technical scheme is not substantially modified or applied directly to other occasions without modification.
Claims (9)
1. The construction method of the double-layer anchor ear concrete formwork support system is characterized by comprising the following steps of:
s1, establishing a lower-layer hoop supporting system:
s11, according to the requirement, at a certain height position of the upper end of the prestressed concrete pipe pile (100), two arc stirrups (11) in the lower support hoop device (1) are oppositely transversely arranged and clamped on the outer wall of the prestressed concrete pipe pile (100), and the two arc stirrups (11) are tightly regulated and fixed through fastening bolts (12);
s12, inserting and fixing the front ends of a plurality of overhanging support steel bars (14) into a plurality of anchor ear embedded nuts (12) arranged on the annular outer end face of a circular arc-shaped stirrup (11) in a lower support anchor ear device (1) one by one, and realizing the fixation of the overhanging support steel bars (14) and the anchor ear embedded nuts (12) by utilizing the fact that external threads are arranged at the front ends of the overhanging support steel bars (14) and are matched with internal threads of the anchor ear embedded nuts (12), so as to realize the establishment of a lower anchor ear support system beside the prestressed concrete pipe pile (100);
s2, constructing a lower friction type inner and outer platform:
s21, sleeving a prefabricated platy inner platform (2) with a pile hole (21) in the center on the prestressed concrete pipe pile (100), and enabling the inner platform (2) to be clung to a plurality of overhanging support steel bars (14) arranged on the lower support hoop device (1);
s22, sleeving a prefabricated plate-shaped outer platform (3) with an outer platform central hole in the center outside the inner platform (2), and enabling the hole wall of the outer platform central hole of the outer platform (3) to be attached to the outer peripheral wall of the inner platform (2);
s23, screwing a plurality of compression screws (41) into a plurality of compression nut holes (22) preset on the end surfaces of the outer platform (3) and the inner platform (2) one by one in sequence in a threaded engagement mode;
s24, when the front end of the screw (41) to be compressed is exposed into the pile hole (21), the prefabricated compressing ends (42) are arranged at the front end of the screw (41) one by one, and then the screw (41) is continuously screwed in, so that the compressing ends (42) at the front end of the screw (41) are extruded on the outer wall of the prestressed concrete pipe pile (100), and the friction type inner and outer platform is constructed;
s3, constructing an upper hoop supporting system:
s31, according to requirements, on the outer wall of the prestressed concrete pipe pile (100) with a certain height above the inner platform (2), two circular arc stirrups (11) in the upper support hoop device (5) are oppositely transversely arranged and clamped on the outer wall of the prestressed concrete pipe pile (100), and the two circular arc stirrups (11) are tightly regulated and fixed through fastening bolts (12);
s32, respectively inserting the front ends of a plurality of overhanging supporting steel bars (14) into a plurality of anchor ear embedded nuts (12) arranged on the annular outer end surfaces of two circular arc stirrups (11) fixed in an upper supporting anchor ear device (5), and fixing the overhanging supporting steel bars (14) and the anchor ear embedded nuts (12) by using the fact that external threads arranged at the front ends of the overhanging supporting steel bars (14) are matched with internal threads of the anchor ear embedded nuts (12);
s33, sleeving a prefabricated platy concrete support template (6) with a pile hole (21) at the center on the prestressed concrete pipe pile (100), and enabling the concrete support template (6) to be tightly attached to a plurality of overhanging support steel bars (14) arranged on the upper support hoop device (5);
s34, a plurality of connecting rod holes are correspondingly formed in the concrete supporting template (6) and the inner platform (2) or the outer platform (3) in advance, and finally, the upper ends and the lower ends of a plurality of supporting connecting rods (7) are respectively arranged in the connecting rod holes of the concrete supporting template (6) and the inner platform (2) or the outer platform (3), and the two ends of the supporting connecting rods (7) are respectively fixed by two nuts in a threaded engagement mode, so that an upper hoop supporting system beside the prestressed concrete pipe pile (100) is constructed; the whole construction process of the double-layer anchor ear concrete formwork support system is finished.
2. The construction method of the double-layer hoop concrete formwork support system according to claim 1, wherein the lower support hoop device (1) and the upper support hoop device (5) are composed of two circular arc stirrups (11), one ends of the two circular arc stirrups (11) are fixed together through hinging, and the other ends of the two circular arc stirrups are fixed through fastening bolts (12); or both ends of the two circular arc stirrups (11) are fixed through fastening bolts (12).
3. The construction method of the double-layer anchor ear concrete formwork support system according to claim 2, wherein the plurality of cantilever support steel bars (14) in the lower support anchor ear device (1) and the upper support anchor ear device (5) are radially arranged by taking the center of a center hole formed by two circular arc-shaped stirrups (11) as a center point, and the plurality of anchor ear embedded nuts (12) and the cantilever support steel bars (14) are all arranged in the same horizontal plane.
4. A construction method of a double-layer anchor ear concrete formwork support system according to claim 3, wherein the lower support anchor ear device (1), the upper support anchor ear device (5) and the inner platform (2) are all arranged on the outer wall of the prestressed concrete pipe pile (100), and the prestressed concrete pipe pile (100) is arranged at the center of a pile hole (21) in the center of the inner platform (2) and the center hole formed by the two circular arc stirrups (11) of the lower support anchor ear device (1) and the upper support anchor ear device (5).
5. The construction method of the double-layer anchor ear concrete formwork support system according to claim 1, wherein the inner platform (2) and the outer platform (3) are positioned on the same plane, and the plurality of compression nut holes (22) and the compression screws (41) are arranged in a radioactive form by taking the center of a pile hole (21) of the inner platform (2) as a center point.
6. The construction method of the double-layer anchor ear concrete formwork support system according to claim 4, wherein in the step S2, the pressing end head (42) is suspended in a pile hole (21) in the center of the inner platform (2) and fixed at the front end of the pressing screw (41), the pressing end head (42) is composed of a steel member at the rear end and a rubber member at the front end, and the rubber member is pressed on the outer wall of the prestressed concrete pipe pile (100).
7. The construction method of the double-layer anchor ear concrete formwork support system according to claim 1, wherein in the step S2, the inner platform (2) and the outer platform (3) are all integrally formed or are formed by splicing and fixing a plurality of parts, and are integrally plate-type platforms with round or square metal structures or plastic structures; and the hole wall of the outer platform center hole of the outer platform (3) is attached to the outer peripheral wall of the inner platform (2).
8. The construction method of the double-layer anchor ear concrete formwork support system according to claim 1, wherein in the step S2, a compression internal thread is arranged in the compression nut hole (22), a compression external thread which is matched with the compression internal thread is arranged on the compression screw (41), and the compression screw (41) is installed in the compression nut hole (22) in a threaded engagement mode.
9. The construction method of the double-layer anchor ear concrete formwork support system according to claim 1, wherein in the step S3, the concrete support formwork (6) is a plate-type platform which is integrally formed or is formed by splicing and fixing a plurality of parts and is of a circular or square metal structure or a plastic structure.
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| CN202310311248.9A CN116427409A (en) | 2023-03-28 | 2023-03-28 | Construction method of double-layer anchor ear concrete formwork support system |
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| CN202310311248.9A CN116427409A (en) | 2023-03-28 | 2023-03-28 | Construction method of double-layer anchor ear concrete formwork support system |
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